在众多建筑装饰装修产品中,花岗石板材越来越受到人们的青睐。但是,我国花岗石的主要品种呈灰白色,不能满足人们对花岗石多色彩的要求。因此,对普通灰白色花岗石进行改色具有现实意义。本文利用氯化铁溶液的水解性,探讨普通灰白花岗石改色的可能性,并确定花岗石改色较理想的工艺条件。 In many architectural decoration products, granite slabs are increasingly favored by people. However, the main varieties of granite in China are gray and white, which cannot meet people’s requirements for multi-color granite. Therefore, it is of practical significance to change the color of ordinary gray and white granite. In this paper, the hydrolyzability of ferric chloride solution was used to explore the possibility of changing the color of ordinary gray granite, and to determine the ideal process conditions for changing the color of granite.